A Appendices
A - 62
E3NW-ECT EtherCAT Digital Sensor Communication Unit Operation Manual (E429)
As shown in the following diagram, turn ON the DS-Bus termination switch only on the last Distributed
Sensor Unit on the DS-Bus network. Turn it OFF on all other Distributed Sensor Units.
Precautions for Correct Use
• You can connect a maximum of eight Distributed Sensor Units to the Sensor Communication
Unit.
• Do not exceed a total length (L1 + L2 + ... + Ln) of 30 m for the DS-Bus cable.
Connection with the Sensor Communications Unit
Sensor Communication Unit
DS-Bus
communications cable
Distributed Sensor Unit 1
• Termination switch: OFF
Distributed Sensor Unit 2
• Termination switch: OFF
Distributed Sensor Unit n
• n: 8 max.
• Termination switch: ON
L2
L1
Ln
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